package edu.sjtu.grid.workflow.iterator;

import edu.sjtu.grid.workflow.graph.Node;

public interface GraphIterator {
	
	public boolean hasNext();
	
	public Node next();
	
	public boolean hasBefore();
	
	public Node before();
	
	/*public void save();
	
	public boolean resume();
	
	public int getDepth();*/
}
